Finding the Fourth Proportional to 331,193,787.40, 496,790,681.10 and 328,926,305.80
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Solution
The fourth proportional to 331,193,787.40, 496,790,681.10 and 328,926,305.80 is: 493,389,458.70
Step by Step Solution
- Step 1: Write the proportion equation
331,193,787.40 : 496,790,681.10 = 328,926,305.80 : x - Step 2: Convert to fraction form
331,193,787.40/496,790,681.10 = 328,926,305.80/x - Step 3: Cross multiply
331,193,787.40x = 496,790,681.10 × 328,926,305.80 - Step 4: Simplify right side
331,193,787.40x = 163,407,523,490,088,896 - Step 5: Solve for x
x = 163,407,523,490,088,896/331,193,787.40 - Step 6: Final answer
x = 493,389,458.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.